close
Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Berger Bullets

Reply

257 weatherby mag load data.

LinkBack Thread Tools Display Modes
  #15  
Unread 07-01-2013, 09:07 PM
Silver Member
 
Join Date: Nov 2010
Location: Ashflat, AR
Posts: 397
Re: 257 weatherby mag load data.

going to pick up some RL 25 for mine tomorrow, anybody got a pet charge for that powder ?
__________________
Weatherby Vanguard 7mmx300win (28 nosler reaming coming)
Weatherby Vanguard 270x300win in the works
Savage LRH 6.5x284
Reply With Quote
  •   #16  
    Unread 07-01-2013, 11:42 PM
    Silver Member
     
    Join Date: Jun 2005
    Posts: 165
    Re: 257 weatherby mag load data.

    W/RL25, I would start around 71-72 gr and work up from there. Usually max is found to be around 74.5 to 75.5 gr. I think the best accuracy I got was around 3400 fps. I think I ran them as fast as 3450. I was using WBY brass, Fed 215M, OAL 3.250 in a vanguard sub-moa. its a 24" bbl. So if you have a 26" bbl you'll see a little more speed probably.
    Reply With Quote

      #17  
    Unread 07-02-2013, 10:34 PM
    Silver Member
     
    Join Date: Nov 2010
    Location: Ashflat, AR
    Posts: 397
    Re: 257 weatherby mag load data.

    I have the same rifle and wby brass so I should end up close to the same thanks for the data
    __________________
    Weatherby Vanguard 7mmx300win (28 nosler reaming coming)
    Weatherby Vanguard 270x300win in the works
    Savage LRH 6.5x284
    Reply With Quote
      #18  
    Unread 10-04-2013, 07:39 PM
    Bronze Member
     
    Join Date: Aug 2012
    Posts: 38
    Re: 257 weatherby mag load data.

    Quote:
    Originally Posted by mrultramag View Post
    W/RL25, I would start around 71-72 gr and work up from there. Usually max is found to be around 74.5 to 75.5 gr. I think the best accuracy I got was around 3400 fps. I think I ran them as fast as 3450. I was using WBY brass, Fed 215M, OAL 3.250 in a vanguard sub-moa. its a 24" bbl. So if you have a 26" bbl you'll see a little more speed probably.


    What bullet weight for this data?
    Reply With Quote
    Reply

    Bookmarks

    Thread Tools
    Display Modes



    All times are GMT -5. The time now is 09:43 PM.


    Powered by vBulletin ©2000 - 2017, Jelsoft Enterprises Ltd.
    Content Management Powered by vBadvanced CMPS
    All content ©2010-2015 Long Range Hunting, LLC